Patent US3133715A successfully refreshed from Google Patents.
US3133715A
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Apparatus for supporting and holding foldable rotor blades of helicopters
Assignee: Sud Aviation Societe Nationale de Constructions Aerdnaettiques
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Filing: 1962-12-14
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Granted: 1964-05-19
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Expires: 1982-12-14
Abstract
No abstract record available.
Inventors
- 👤 Grunfelder Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:15
CPC Classifications
B; B64; B64C; B64C27/00; B64C27/32; B64C27/46; B64C27/473; B64C27/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
APPARATUS FOR SUPPORTING AND HOLDING FOLDING BLADES OF HELICOPTERS, COMPRISING A BLADE-CARRYING CLIP FOR EACH BLADE, EACH CLIP HAVING A LOWER JAW ENGAGING BELOW THE BLADE AND AN UPPER JAW WHICH PRESSES THE SAID BLADE AGAINST THE LOWER JAW, A SUPPORT FOR EACH CLIP BEARING ON THE HELICOPTER FUSELAGE TO TRANSMIT THERETO THE WEIGHT OF THE BLADE, ALL EXCEPT ONE AT MOST OF THESE SUPPORTS BEING PIVOTABLE ABOUT THEIR POINTS OF ATTACHMENT ON THE FUSELAGE, WHILST THE BLADES THEMSELVES ARE PIVOTALLY CONNECTED TO THE BLADE HUB.
Claim 2
Dependent Claim
86 words
APPARATUS FOR SUPPORTING AND HOLDING FOLDING BLADES OF HELICOPTERS, COMPRISING A BLADE-CARRYING CLIP FOR EACH BLADE, EACH CLIP HAVING A LOWER JAW ENGAGING BELOW THE BLADE AND AN UPPER JAW WHICH PRESSES THE SAID BLADE AGAINST THE LOWER JAW, A SUPPORT FOR EACH CLIP BEARING ON THE HELICOPTER FUSELAGE TO TRANSMIT THERETO THE WEIGHT OF THE BLADE, ALL EXCEPT ONE AT MOST OF THESE SUPPORTS BEING PIVOTABLE ABOUT THEIR POINTS OF ATTACHMENT ON THE FUSELAGE, WHILST THE BLADES THEMSELVES ARE PIVOTALLY CONNECTED TO THE BLADE HUB.
References Cited (Backward Citations)
US2110443A
Cited
US2549886A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-19 | 1967-11-18 | 1968-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-19 | 1971-11-18 | 1972-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-19 | 1975-11-18 | 1976-05-19 | $7700.00 | Window Closed / Lapsed |